A novel phosphorus-silicon containing flame-retardant DOPO-V-PA was used to wrap carbon nanotubes (CNTs). The results of FTIR, XPS, TEM and TGA measurements exhibited that DOPO-V-PA has been successfully grafted onto the surfaces of CNTs, and the CNTs-DOPO-V-PA was obtained. The CNTs-DOPO-V-PA was subsequently incorporated into epoxy resin (EP) for improving the flame retardancy and dispersion. Compared with pure EP, the addition of 2 wt% CNTs-DOPO-V-PA into the EP matrix could achieve better flame retardancy of EP nanocomposites, such as a 30.5% reduction in peak heat release rate (PHRR) and 8.1% reduction in total heat release (THR). Furthermore, DMTA results clearly indicated that the dispersion for CNTs-DOPO-V-PA in EP matrix was better than pristine CNTs.

一种新型含磷硅阻燃剂 DOPO-V-PA 用于包裹碳纳米管 (CNT)。FTIR、XPS、TEM和TGA测量结果表明，DOPO-V-PA已成功接枝到CNTs表面，得到CNTs-DOPO-V-PA。随后将 CNTs-DOPO-V-PA 掺入环氧树脂 (EP) 中以提高阻燃性和分散性。与纯 EP 相比，在 EP 基体中加入 2 wt% CNTs-DOPO-V-PA 可以实现 EP 纳米复合材料更好的阻燃性，例如峰值放热率 (PHRR) 降低 30.5%，同时降低 8.1%总放热 (THR)。此外，DMTA 结果清楚地表明 CNTs-DOPO-V-PA 在 EP 基质中的分散性优于原始 CNTs。